Bertrandite from
France | |
| A. Wittern, J.-R. Journée: "Mineralien finden in den Vogesen", von Loga (Cologne), 1997 |
| Queneau, Patrice (n.d.) Personal Communication. |
Germany | |
| Markl, Gregor, Schumacher, John C. (1996) Spatial variations in temperature and composition of greisen-forming fluids; an example from the Variscan Triberg granite complex, Germany. Economic Geology, 91 (3) 576-589 doi:10.2113/gsecongeo.91.3.576 |